/*
 * Copyright (C) 2012 Roman Yakovenko <b179a9@gmail.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.b17.net.core;

import com.b17.crypto.core.Utils;
import com.b17.crypto.provider.Cipher;

import java.util.Arrays;

/**
 * Created by b17
 * 3/4/12 9:01 AM
 */

public class SecurePacketProxy extends Packet {

    private Cipher cipher;

    public SecurePacketProxy(Packet packet, Cipher cipher) {
        super(packet.getFileName().getBytes(), Utils.toBytes(packet.getFileSize()), packet.getData());
        this.cipher = cipher;
    }

    public byte[] getData() {
        int realSize = super.getFileSize();
        byte[] decrypted = cipher.decrypt(super.getData());
        return Arrays.copyOf(decrypted, realSize);
    }

    public byte[] toByte() {
        byte[] data = cipher.encrypt(super.getData());
        Packet cipheredPacket = new Packet(getFileName().getBytes(), Utils.toBytes(getFileSize()), data);
        return cipheredPacket.toByte();
    }
}
